Experimental study of the hydrodynamic expansion following a nanosecond repetitively pulsed discharge in air

Da A. Xu*, Deanna A. Lacoste, Diane L. Rusterholtz, Paul Quentin Elias, Gabi D. Stancu, Christophe O. Laux

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

84 Scopus citations

Abstract

We report on an experimental study of the hydrodynamic expansion following a nanosecond repetitively pulsed (NRP) discharge in atmospheric pressure air preheated up to 1000 K. Single-shot schlieren images starting from 50 ns after the discharge were recorded to show the shock-wave propagation and the expansion of the heated gas channel. The temporal evolution of the gas temperature behind the shock-front is estimated from the measured shock-wave velocity by using the Rankine-Hugoniot relationships. The results show that a gas temperature increase of up to 1100 K can be observed 50 ns after the nanosecond pulse.

Original languageEnglish (US)
Article number121502
JournalApplied Physics Letters
Volume99
Issue number12
DOIs
StatePublished - Sep 19 2011
Externally publishedYes

Bibliographical note

Funding Information:
This research has been supported by Agence Nationale de la Recherche PREPA project (Grant No. ANR – 09-BLAN-0043) and by a doctoral grant for one of the authors (D. Xu) provided by the Erasmus Mundus Tandem Program. We thank Dr. T. Schuller and Dr. D. Durox for lending part of the schlieren equipment.

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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